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Point to Point Wireless Bridge Design: What Specs Matter (Throughput, Fresnel zone, Mounting)

Published by Juan David Ramirez on 1st Jul 2026

Hi there, it’s Juan David again, your Lead Tech Support specialist at Flytec Computers. Point to point wireless bridges are one of the fastest ways to connect two buildings, extend a LAN to a remote area, or backhaul cameras and access points without trenching fiber. But link success is rarely about buying the highest power radio. The best designs come from matching the right specs to the path, the capacity needs, and the mounting environment. 

This guide focuses on three things that decide whether your link is stable for years or becomes a constant trouble ticket: throughput, Fresnel clearance, and mounting. 

1) Throughput: Focus on real world capacity 

Start with what you are carrying across the link: 

  • Internet backhaul to a second building
  • Office traffic between buildings
  • VoIP and video conferencing
  • IP camera backhaul
  • Wireless access points at the far end  

          Then estimate the throughput you need today and add headroom. If the link will carry cameras, do a quick estimate per camera bitrate and add extra for spikes and future growth. 

          What affects throughput the most: 

          • RF conditions and interference
          • Signal to noise ratio
          • Channel width and modulation capability
          • Antenna gain and beamwidth
          • Ethernet port speed, Gigabit is important in most modern links

                  Example part numbers that are commonly used for PtP: 

                  • Dish style 5 GHz PtP is popular for longer distance links, like PBE-5AC-Gen2-US which is positioned as a high performance 5 GHz point to point bridge with 15+ km link range and 450+ Mbps throughput. which is positioned as a high performance 5 GHz point to point bridge with 15+ km link range and 450+ Mbps throughput.
                  • For lighter duty links or cost sensitive deployments, installers often use LiteBeam options such as LBE-5AC-Gen2-US.
                  • For higher capacity backhaul style builds, the airFiber line is a common step up, like AF-5XHD which supports wider channel bandwidth options up to 100 MHz.
                  • For short range, very high speed links where 5 GHz is crowded, 60 GHz kits can be a strong choice, like the MikroTik Wireless Wire Cube Pro kit CubeG-5ac60aypair-US.  

                        2) Fresnel zone: Line of sight is not enough 

                        A link can look clear and still perform poorly if the Fresnel zone is blocked. Fresnel clearance matters because RF energy spreads beyond the straight line between radios. Trees, building edges, and terrain that sit inside the Fresnel zone can absorb and reflect signal, reducing modulation and causing drops. 

                        What to validate on every PtP path: 

                        • Clear visual line of sight
                        • Clearance through the path, not just at the ends
                        • Seasonal change, trees that fill in during summer
                        • New construction risk, like cranes or future building expansions

                              Practical rule: 
                              The longer the link, the more Fresnel clearance matters. If your path is tight, raising the mount height can often improve performance more than swapping radios. 

                              3) Mounting: Mechanical stability is a performance spec 

                              A lot of links fail over time because the mount was not rigid enough. If a dish moves in wind, the link can fluctuate and degrade even if the RF design was good. 

                              Mounting and install details that matter: 

                              • A rigid mount that does not twist in wind
                              • Pole diameter compatibility and proper clamping
                              • Aiming tools and the ability to lock alignment
                              • Weatherproofing, drip loops, and clean cable routing
                              • Grounding and surge protection for outdoor cable runs  

                                      It is worth noting that Ubiquiti calls out mounting improvements and surge protection as part of the value on the PBE-5AC-Gen2-US product listing, and those details show up in real deployments.  

                                      Quick selection guide 

                                      Choose a LiteBeam type solution such as LBE-5AC-Gen2-US when you have a clean path, moderate throughput needs, and want a cost effective bridge.  

                                      Choose a dish solution such as PBE-5AC-Gen2 when you want better noise handling and a more focused beam for longer distance PtP.  

                                      Choose a higher capacity backhaul radio such as AF-5XHD when you need more throughput options and a build designed for heavier links.  

                                      Choose a 60 GHz kit such as CubeG-5ac60aypair-US when you need very fast short range bridging and want to avoid crowded 5 GHz spectrum, assuming the path and distance fit the design.  

                                      Final thoughts 

                                      A strong point to point bridge is a combination of proper RF planning, clear line of sight, and solid mounting. If you know the link distance, mounting height, expected traffic, and whether the path has true line of sight, it becomes much easier to choose the right radio class and avoid surprises during installation. 

                                      For help choosing the right point to point solution, contact Flytec through live chat, call 305-471-5142, or email website@flyteccomputers.com with the link distance, rough mounting height, line of sight conditions, and what you need to backhaul.